90255184
Oct 14, 2020
Plumb bobs; Electronic plumb bobs; Electronic plumb bobs for gauging storage tanks and vessels for determining fluid levels related to oil, gas, water and emulsions; Electronic plumb bobs for gauging storage tanks and vessels, and providing haptic signals in response to fluid levels related to oil, gas, water and emulsions; and Electronic plumb bobs for gauging storage tanks and vessels, and providing haptic signals in response to detecting organic fluid levels and inorganic fluid levels
Electrical and Scientific Apparatus